Fluid ejecting nozzle



April 10, 1934. H. A,IRQs-: LUND i $553,990

' FLUID EJEcTING xozzLE l Filed Dec. 7, 1932 Film EEJVECG NGE Harold n.. Roseland, Toledo, Ohio, assignor to 'Ehe De ltilbiss Company, Toledo, Ohio, a corporation oi @hic Application December 7, 1932, Serial No. 646,079

This invention relates to a uid ejecting nozzle adapted primarily for discharging a comparatively une stream of lubricant or other liquid under considerable pressure.

The general object of the invention is to provide a simple and emcient nozzle forthe purpose stated, and preferably one having a pin-size oriiice and a.cleaning pin therefor. It is also desirable to provide means cooperating with the pin-size orifice to discharge the liquid in the form of a whirling spray.

The subject matter of the present application is similar to that divided from my earlier application, Serial No. 599,898, led March 19, 1932, but embodies certain improvements thereon.

The invention will be more particularly described in connection with the accompanying drawing. in which:

Fig. 1 is a central longitudinal section of the improved nozzle attached to the outlet end of a liquid discharge tube;

Fig. 2 is a central longitudinal section taken substantially at right angles to the plane of F13. 1;

Fig. 3 is a. section taken on the line 3-3 of Fis. l;

Fig. 4 is a sectiontaken on the line -4--4 of F18. 1I

Fig..5 is an enlarged perspective view of nozzle insert.

As illustrated in the drawing the invention is associated with the outlet end of a liquid discharge tube 'I to which there is secured anextension 8 formed with a cylindrical chamber 35 9. Secured between the end of the tube 7 and the extension 8 is a spider-like member or disc 10 provided with openings 11 through which the fluid may pass into the chamber 9. The disc 10 is formed centrally with a forwardly projecting stem 12 in which a cleaning pin 13 is anchored. In mounting this pin, it is convenient to provide the stem 12 with a central bore to receive the end of the pin and to form the stem also with a. transverse bore 14 within which the pin is bent, as shown at 15, to anchor the same.

The nozzle tip 16 is secured to a tubular connecting member 17 which is mounted for longitudinal reciprocatory movement in the front end of the extension 8 and is provided with a .head

the

18 which is guided within the cylindrical chamity 21 there is secured a substantially cylindrical insert 23 formed with spiral channels 24 leading into the cavity 2l. The discharge end portions of these channels are in forwardly inclined tangential relation to the base of the conical face 20. The insert 23 is also preferably formed with a transverse channel 25 which alords -communication between the interior of the tubular connecting member 17 and the channels 24.

In the operation of my improved nozzle, the fluid which is forced under pressure through the tube 7v passes through the tubular member 17 and into the spiral channels 24, whence it is discharged in streams which iow spirally along the surface of the cavity 21, whence they are discharged from the orice 22 in the form of a line spray. The pin 13 normally extends longitudinally through the insert 23 and is in a position to be projected through the orice 22 when the front end of the nozzle tip 16 is brought against an object with suicient force to move it rearwardly against the opposition of the spring 19. The pin, however, is not long enough to extend under any circumstances beyond the plane in which the front end of the nozzle terminates, so that there is no danger of bending or otherwise injuring the pin.

While I have described in detail the preferred construction and operation of my invention, it will be apparent that the same may be considerably modified Without departing from the scope of the appended claim.

What I claim is:-

The combination With a liquid discharge tube, of a nozzle having a forwardly convergent conical cavity with a restricted orice at the vertex thereof, an insert secured Within said nozzle in xed relation thereto and formed with a spiral channel, the discharge end of which is in forwardly inclined tangential relation to the base of said conical cavity, a tubular connecting member secured to said nozzle and having a longitudinally reciprocable connection with said tube, said connecting member affording communication between the bore of said tube and the chanvnel in said insert, a spring normally impelling said nozzle forwardly, and a cleaning pin xed with relation to said tube and normally extending through said insert in position to enter said oriiice as the nozzle is forced rearwardly in opposition to said spring.

HAROLD A. ROSELUND. 

